Flour-mill



(ModeL) I 3 SheetsSheet 2.

O. O. SOHILL.

FLOUR'MILL.

No.:248,510. Patented 001:. 18, 1881.

WITNESSES:

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(ModeL) 3 Sheets-Sheet 3.

0. 0. SGHILL! FLOUR MILL.

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ATTORNEYS.

UNITED STATES PATENT OFFICE.

CHARLES C. SOHILL, OF RICHMOND, INDIANA.

FLOUR-MILL.

SPECIFICATION forming part of Letters Patent No. 248,510, dated October 18, 1881.

Application filed March 23, 1881. (Model) To all whom "025 may concern Be it known that I, CHARLES C. SOHILL, of Richmond, in the county of Wayne and State of Indiana, have invented a new and Improved Flour-Mill, of which the. following is a specification;

The object of my invention is to provide a new and improved flourmill with vertical stones, which can easily be adjusted, is provided with practical and economical feeding devices, and is very effective in operation and devoid of the defects accompanying the ordinary mills with vertical stones.

In the accompanying drawings, Figure 1 is a rear elevation of my improved flour-mill. Fig. 2 is a plan view of the same. Fig. 3 is a detail crosssectional elevation of the adjustable funnel of the feeding device on the liney y, Fig.1. Fig. 4: is a detail view of the screws for holding the top of the casing of the fixed stone. Fig. 5 is a cross-sectional elevation of my improved flour-mill on the line a; m, Fig. 1. Fig. 6 is a cross sectional elevation of the screw-shaft and its screw-nut for adjustingthe fixed stone. Fig. 7 is a horizontal view, through the grain-conveyor chute, on the line 2 2, Fig. 5. Fig. 8 is an elevation of the fixed stone of my improved flour-mill. Fig. 9 is a cross-sectional elevation of the mechanism for rotating the shaft in the grain conveyer or chute. Fig. 10 is a horizontal sectional elevation of the same on the line w to, Fig. 9.

Similar letters of reference indicate corresponding parts.

The vertical runner A is mounted on a horizontal shaft, B, which has bearings in the front and rear transverse bars, B and B of the frame of the machine, and has the pulleys O and C mounted on the front and rear ends respectively, the front pulley, O, occupying the space between the front transverse bar, B, and a crutch or bracket, (3, attached thereto, and provided with a screw, a, by means of which the bearing of the shaft B in the crutch machine and extending from front to rear, thus permitting the flanges which support the entire weight of the fixed stone D and easing E to slide in the said grooved tracks. The fixed stone D is attached to the casing E by means of four or more heavy screws, D A tubular socket, F, provided with longitudinal slots b, and with flanges F, is secured to the back of the casing E, and is adapted to receive the longitudinally-slotted rear end of a shaft, G, provided with a screwthread, G, at the other end. The shaft G is attached to the socket F by means of a wedge, F passing through the slots 12 of the socket and through the slot of the said shaft.

An externally and internally threaded sleeve, G provided with an end flange, d, fitting in a recess in the transverse bar B is screwed upon the shaft G, and is held to the bar B by means of a plate, G attached to the said bar, and provided with an aperture through which the sleeve can pass and can rotate on its longitudin al axis. A ring, d, is passed over the sleeve G and a flanged nut, G is screwed upon the sleeve, and is secured thereon by a bindingscrew, (1 By turning the nut G the shaft G, and consequently, also, the casing E of the fixed stone, can be drawn forward or backward, as may be desired.

A belt, H, is passed from the pulley O of the shaft B to the pulley H on the shaft J, journaled on the top of the machine, and provided with an additional pulley, H and with a worm, J, engaging with the teeth of a horizontal cog-wheel, J covered by a larger disk or circular plate, J attached thereto.

A funnel formed of a cylindrical or like receptacle, I, without a top or bottom, is held above the middle of the plate J by the bent arms K K, and contains a second like-shaped receptacle, 1, of greater height, and arranged to slide up and down in the receptacle I. The inner receptacle, I, is provided with a row of cogs, c c, which pass through a slot, 6, in the receptacle I, and engage with a worm, f, on a vertical shaft, f, held by suitable brackets, f on the receptacle I, thus permitting the receptacle 1 to be raised or lowered by rotating said shaft, whereby the quantity of grain delivered upon the plate J from the funnel I is regulated.

A scraper, L, passes from the funnel I over the plate J 3 to a chute, L, which conducts the grain into a conveyer, M, which scraper scrapes the grain into the said chute L. A belt, N, passes from the pulley H on the shaft J to the pulley N on the vertical shaft 0, and a belt, P, passes from a second pulley, N on the same shaft 0 t0 the pulley Q on the vertical shaft Q, so that all the machinery on the top of the mill is driven from the main shaft B by means of the belt H.

The lower end of the shaft Q is provided with a squared recess to receive the upper squared end of a vertical shaft, R, in the couveyer M, which is contained in the casing of the fixed stone D; but as the casing is moved forward and backward this shaft Q must also be arranged to move, and for this reason the shafts Q and Rniust be made detachable. The shaft Q is supported by a plate, L which passes into an annular groove, 9, of the shaft Q, which plate L is held to a larger plate, P, attached to the top I? of the machine by screws passing through the slots h h of the said plateI.

The conveyer M consists of a cylindrical vessel provided with a longitudinal slot, M, adjoining the upper edge, N of the fixed stone D, which stone is slightly beveled at the said end toward the slot M, as shown in Fig.8. A series of horizontal or slightly-inclined flanged wings, S, are attached to the shaft It, as shown in Figs. 5, 7, and 8. The upper squared end of the shaft R fits into the lower recessed end of the shaft Q, is journaled in a bearing on the lining of the eye of stone D, and consequently rotates with the same with great rapidity, and the wings S S throw the grain in the open space formed between the two stones A and D at F.

To prevent the grain from dropping out be tween the two stones a packing-strip, T, of prepared leather or other like suitable material, is arranged along the upper quarter of the outer edge another like strip, T, is arranged at the outer side of the slot M and parallel with the same, and a like strip, T is also arranged around the edge of the eye of the stone, as shown in Fig. 8.

The, fixed stone D is provided with a metal eye, U, which is secured in the same by means of the screws V V. The main shaft B passes through said eye, as shown. 7 A bar or rod, W, fitting into a corresponding groove in the top of the frame of the fixed stone, is attached to the screws XX, taking in and passing through the top I? of the machine. By means of these screws the bar WV can be pressed firmly upon the frame of the stone, and will prevent vibrations of the fixed stone.

The burrs of both the runner A and the fixed stone D are divided into sections in some wellknown manner.

The operation is as follows: The grain is placed in the funnel or receptacle I, and the quantity admitted to the stones is regulated by raising the sliding part I more or less, so as to leave a smaller or larger space between the bottom edge of said sliding part and the plate J through which space the grain must pass. The plate or disk J is revolved in the direction of the arrow a by the action of the worm J upon the teeth of the wheel .1, and the shaft J is rotated from the main shaft B, which in turn is rotated by a belt deriving its movement from some motor, and passing over the pulley C; but it the plate J moves in the direction of the arrow a all the grain will be scraped oil from said plate into the chute L by the scraper L. The grain drops through the chute L into the conveyor M and upon the wings S, attached to the shaft R of the same, and as the shaft rotates with very great rapidity the wings S throw the grain in between the stones A and D with great force. The grain is seized by the runner which rotates in the direction of the arrow 11, and the flour drops out between the stones at A A. The packing-strips T, T, and T prevent the grain and unfinished flour from dropping out between the stones or into the eye. The stones last much longer, need not be sharpened as often as ordinarily, and do not get hot if constructed as herein shown, and the stones do not grind upward, which is very injurious to the stones and quality of flour, and should be avoided as much as possible. The fixed stone D has about the shape of half ot'a ring, and the runner is circular. The entire surface of the runner is therefore not in operation, and each part passes through the open air a short distance every time after having passed the grinding-surface of the fixed stone D, and is thus cooled.

The casing E of the fixed stone can oemoved forward or backward by turning the screw-nut G and thereby the space between the two stones can be regulated.

The within-described flour-mill maybe made of any suitable size, as may be required.

The wings of the conveyer drive a large quantity of fresh air in between the stones with the grain, and this air not only cools the stones, but throws off the flour-dust-an advantage that other mills do not possess.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a flouring mill, a fixed stone, D, formed in the shape of a half-moon and with a semicircular eye at the center, in combination with a vertical runner, as described.

2. In flour-mills, the combination, with the vertical runner, of the vertical semi-annular fixed stone D, provided with an iron eye, U, and circumferential and edge packing-strips T, T, and T substantially as herein shown and described, and for the purpose set forth.

3. In flour-mills, the combination, with the vertical semi-annular fixed stone D, of its casin g E, the eye U, and the longitudinally-slotted cylindrical conveyer M, contained within said casing E, substantially as herein shown and described, and for the purpose set forth.

4. In flour-mills, the combination, with the vertical runner A and the semi-annular vertical fixed stone D, of the casing E, the longitudinally-slotted conveyer M and its shaft R, provided with a series of wings, S S for throwing the grain, substantially as herein shown and described, and for the purpose set forth.

5. In flour-mills, the combination, with the vertical runner A and the semi-annular fixed stone D, of the conveyer M, the shaft R, the fliers S, the shaft Q, pulley Q, slotted plate 1?, and the holding-plate L substantially as herein shown and described, and for the purpose set forth.

6. The combination, with the funnel I and plate J of the scraper L and chute L, as shown and described.

7. In flour-mills, the combination, with the adjustable funnel I, of the revolving plate or disk J, the scraper L, the chute L, and the conveyer M, containing a shaft, R, with wings S S, substantially as herein shown and described, and for the purpose set forth.

8. In flour-mills, the combination, with the casing E of the fixed stone D, of the bar W, screws X X, and top plate, P of the mill, substantially as herein shown and described, and for the purpose of preventing vibrations of the fixed stone, as set forth.

9. In flour-mills, the combination, with the casing E for the fixed stone D, of the flanges D, the tracks or ways E, the shaft G, with threaded end G, the threaded sleeve G, the plate G and thenut G substantially as herein shown and described, and for the purpose set forth.

10. In flour mills, the combination, with the vertical runner A and the semi-annular vertical fixed stone D, of the casing E, the shaft G, the sleeve G the nut G, the shaft B, the bracket 0, and the set-screw a, substantially as herein shown and described, for the purpose of permittin g an adjustmentof both stones, as set forth.

11. In flour-mills, the combination, with the main shaft or spindle B, of the pulleys C and O mounted thereon, the belt H, pulleys H and H shaft J, belts N and P, pulleys N, N, and O, shaft Q, and the revolving plate J substantially as herein shown and described, and for the purpose of driving the runner and the feeding devices from the same shaft, as set forth.

CHARLES (J. SOHILL.

Witnesses J AOOB DEISLER, SAML. W. COMPTON. 

